Transcript Compare and Order Numbers Through Millions 4th grade

Comparing Numbers Through
Millions
th
4 grade
.
Comparing Numbers
• Comparing numbers is when we look at
numbers and decide which number is greater,
lesser, or if they are equal
• We use the symbols >, <, or =
Examples: 145 > 99
600 < 6,000
18 = 18
Non-examples: 45 + 153
6,432 - 239
51 x 12
545 \ 5
What does it mean to compare numbers?
Greater than >
Less than <
Equal =
12
112
340
430
890
634
549
54
65
65
481
481
ON A SHEET OF PAPER, TRY THESE ON YOUR OWN. THE NEXT
SLIDE IS WHERE YOU CAN CHECK YOUR WORK.
Greater than >
Less than <
Equal =
12
112
340
430
890
634
549
54
65
65
481
481
Which choice shows an example of
comparing numbers?
A.) 16 + 768
B.) 234 < 243
How did you know?
Why is comparing numbers
important?
• You will need to know how to compare
numbers so you can order numbers
• When you are shopping you will want to
know how to compare prices.
Steps to compare numbers
1. Line up the numbers up.
2. Compare the digits from left to right
3. When the digits do not match the number
with the bigger digit is greater!
4. Write the correct symbol <, >, or =
749,439
749,439
1. Line up the numbers.
(start with the ones place)
2. Compare the digits from left to right
3. When the digits do not match the number with the bigger digit is
greater, if they are the same the numbers are equal.
4. Write the correct symbol <, >, or =
Millions
Hundreds
Tens
Thousands
Ones
Hundred
s
,
, 7
,
Ones
Tens
Ones
4
9
Hundreds
,
,4
,
Tens
Ones
3
9
490,654,633
49,654,927
1. Line up the numbers.
(start with the ones place)
2. Compare the digits from left to right
3. When the digits do not match the number with the bigger digit is
greater, if they are the same the numbers are equal.
4. Write the correct symbol <, >, or =
Millions
Hundreds
Tens
Thousands
Ones
,
,
,
Hundred
s
How did I know one was greater?
Tens
Ones
Ones
,
,
,
Hundreds
Tens
Ones
754,981,905
754,985,658
1. Line up the numbers.
(start with the ones place)
2. Compare the digits from left to right.
3. When the digits do not match the number with the bigger digit is
greater, if they are the same the numbers are equal.
4. Write the correct symbol <, >, or =
Millions
Thousands
Hundreds
Tens
Ones
7
5
7
5
Ones
Hundred
s
Tens
Ones
4
9
8
1
4
9
8
5
,
,
What did we do to compare numbers?
,
,
,
Hundreds
Tens
Ones
9
0
5
Let’s Review
1. Line up the numbers up.
2. Compare the digits from left to right
3. When the digits do not match the
number with the bigger digit is greater!
4. Write the correct symbol <, >, or =
Look over these expressions.
Decide which symbol, <, >,= to use.
434,900,124
434,900,124
564,569
5,640,569
72,890,450
72,745,982